I. That God will appear for Jerusalem, and will espouse and plead her cause. 1. He will be revenged on Zion's enemies (v. 2): I was jealous for Zion, or of Zion; that is, "I have of late been heartily concerned for her honour and interests, with great jealousy. The great wrath that was against her (ch. vii. 12) now turns against her adversaries. I am now jealous for her with great fury, and can no more bear to have her abused in her afflictions than I could bear to be abused by her provocations." This he had said before (ch. i. 14, 15), that they might promise themselves as much from the power of his anger, when it was turned for them, as they had felt from it when it was against them. The sins of Zion were her worst enemies, and had done her the most mischief; and therefore God, in his jealousy for her honour and comfort, will take away her sins, and then, whatever other enemies injured her, it was at their peril. 2. He will be resident in Zion's palaces (v. 3): "I have returned to Zion, after I had seemed so long to stand at a distance, and I will again dwell in the midst of Jerusalem as formerly." This secures to them the tokens of his presence in his ordinances and the instances of his favour in his providences.